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/*
* transmission-remote-gtk - A GTK RPC client to Transmission
* Copyright (C) 2010 Alan Fitton
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>
#include <glib-object.h>
#include <json-glib/json-glib.h>
#include "trg-client.h"
#include "http.h"
static struct http_response *trg_http_perform_inner(trg_client * client,
gchar * req,
gboolean recurse);
static size_t http_receive_callback(void *ptr, size_t size, size_t nmemb,
void *data);
static size_t header_callback(void *ptr, size_t size, size_t nmemb,
void *data);
void http_response_free(struct http_response *response)
{
if (response->data != NULL)
g_free(response->data);
g_free(response);
}
static struct http_response *trg_http_perform_inner(trg_client * tc,
gchar * req,
gboolean recurse)
{
CURL *handle;
long httpCode;
struct http_response *response;
struct curl_slist *headers = NULL;
response = g_new(struct http_response, 1);
response->size = 0;
response->status = -1;
response->data = NULL;
handle = curl_easy_init();
curl_easy_setopt(handle, CURLOPT_USERAGENT, "trg");
curl_easy_setopt(handle, CURLOPT_PASSWORD, tc->password);
curl_easy_setopt(handle, CURLOPT_USERNAME, tc->username);
curl_easy_setopt(handle, CURLOPT_URL, tc->url);
curl_easy_setopt(handle, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION,
&http_receive_callback);
curl_easy_setopt(handle, CURLOPT_WRITEDATA, (void *) response);
curl_easy_setopt(handle, CURLOPT_HEADERFUNCTION, &header_callback);
curl_easy_setopt(handle, CURLOPT_WRITEHEADER, (void *) tc);
curl_easy_setopt(handle, CURLOPT_POSTFIELDS, req);
/*curl_easy_setopt(handle, CURLOPT_VERBOSE, 1); */
if (tc->session_id != NULL) {
headers = curl_slist_append(headers, tc->session_id);
curl_easy_setopt(handle, CURLOPT_HTTPHEADER, headers);
}
response->status = curl_easy_perform(handle);
curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &httpCode);
curl_easy_cleanup(handle);
if (headers != NULL)
curl_slist_free_all(headers);
if (response->status == CURLE_OK) {
if (httpCode == HTTP_CONFLICT && recurse == TRUE) {
http_response_free(response);
return trg_http_perform_inner(tc, req, FALSE);
} else if (httpCode != HTTP_OK) {
response->status = (-httpCode) - 100;
}
}
return response;
}
struct http_response *trg_http_perform(trg_client * tc, gchar * req)
{
return trg_http_perform_inner(tc, req, TRUE);
}
static size_t
http_receive_callback(void *ptr, size_t size, size_t nmemb, void *data)
{
size_t realsize = size * nmemb;
struct http_response *mem = (struct http_response *) data;
mem->data = realloc(mem->data, mem->size + realsize + 1);
if (mem->data) {
memcpy(&(mem->data[mem->size]), ptr, realsize);
mem->size += realsize;
mem->data[mem->size] = 0;
}
return realsize;
}
static size_t header_callback(void *ptr, size_t size, size_t nmemb,
void *data)
{
char *header = (char *) (ptr);
trg_client *client = (trg_client *) data;
if (g_str_has_prefix(header, "X-Transmission-Session-Id: ") == TRUE) {
char *nl;
if (client->session_id != NULL)
g_free(client->session_id);
client->session_id = g_strdup(header);
nl = strrchr(client->session_id, '\r');
if (nl)
*nl = '\0';
}
return (nmemb * size);
}
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